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Which of the following are true statements about the expression $-7+7$ ?$\newline$Choose $2$ answers:$\newline$(A) The expression describes the number that is $7$ to the left of $-7$ on the number line.$\newline$(B) The expression describes the number that is $7$ to the right of $-7$ on the number line.$\newline$(C) The expression equals $-14$ .$\newline$(D) The expression equals $0$.